I would agree that many of the people joining new networks are the smaller sites that were turned down by the larger companies with more strict entry requirements.

I was lucky (or, more accurately, ignorant), as I never searched for an ad serving company until the site I had was well established and in the millions of page views per month.

When it came time to choose the companies to sell my advertising space, I was lucky enough to stumble across Geekvillage! I have learned a great deal from the good (and bad) experiences of people here.

I'm not familiar with which companies are 'new', but when it came time to apply, I went to and was lucky enough to be accepted by the following companies:

Well, I do a few things before I start serving ads for any network. First, I do a search and see if there are any negative things said about them. I also ask other webmasters and site owners how the serivce is, if they are using them. Finally, I like to call and or e-mail their staff/support and see how they respond to my questions. It's really a **** shoot, but for the most part, I really only got ******* twice, and that was back in 00 (Valuead & Adworldnetwork). Another good thing is to see what their ads are. If they are all affiliate networks (I.E. Linkshare, CJ, etc.) and house ads, then I just move on. It has worked ok for me in the last few years. Stick with what you know I guess.